<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card class="box-card">
      <el-alert
        title="添加商品信息"
        type="info"
        :closable="false"
        center
        show-icon
      >
      </el-alert>

      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="addFormref"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="tabPosition"
          :before-leave="beforeLeave"
          @tab-click="tabClick"
        >
          <!--  -->
          <el-tab-pane
            label="基本信息"
            name="0"
          >
            <!-- 商品名称 -->
            <el-form-item
              label="商品名称"
              prop="goods_name"
            >
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <!-- 商品价格 -->
            <el-form-item
              label="商品价格"
              prop="goods_price"
            >
              <el-input
                v-model="addForm.goods_price"
                type="number"
              ></el-input>
            </el-form-item>
            <!-- 商品重量 -->
            <el-form-item
              label="商品重量"
              prop="goods_weight"
            >
              <el-input
                v-model="addForm.goods_weight"
                type="number"
              ></el-input>
            </el-form-item>
            <!-- 商品数量 -->
            <el-form-item
              label="商品数量"
              prop="goods_number"
            >
              <el-input
                v-model="addForm.goods_number"
                type="number"
              ></el-input>
            </el-form-item>
            <!-- 商品分类 -->
            <el-form-item
              label="商品分类"
              prop="goods_cat"
            >
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>

            </el-form-item>
          </el-tab-pane>
          <!-- 商品参数 -->
          <el-tab-pane
            label="商品参数"
            name="1"
          >
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData "
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="item1"
                  v-for="(item1,i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <!-- 商品属性 -->
          <el-tab-pane
            label="商品属性"
            name="2"
          >
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <!-- 商品图片 -->
          <el-tab-pane
            label="商品图片"
            name="3"
          >
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="successList"
            >
              <el-button
                size="small"
                type="primary"
              >点击上传</el-button>

            </el-upload>
          </el-tab-pane>
          <!-- 商品内容 -->
          <el-tab-pane
            label="商品内容"
            name="4"
          >
            <quill-editor v-model="addForm.goods_introduce">
            </quill-editor>
            <el-button
              @click="add()"
              type="primary"
              class="bbb"
            >添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览 -->
    <el-dialog
      title="图片预览"
      :visible.sync="dialogVisible"
      width="50%"
      class="aaa"
    >
      <img
        :src="previewPath"
        alt=""
      >
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";

export default {
  data() {
    return {
      activeIndex: "0",
      tabPosition: "left",
      addForm: {
        attrs: [],
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: "",
      },
      addFormrules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请输入商品分类", trigger: "blur" },
        ],
      },
      cateList: {},
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      manyTableData: [],
      onlyTableData: [],

      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      previewPath: "",
      dialogVisible: false,
      attrs: [],
    };
  },
  created() {
    this.shangping();
  },
  methods: {
    //商品分类数据
    async shangping() {
      const res = await this.$http.get("categories");

      this.cateList = res.data.data;
      // console.log(this.cateList);
    },

    //级联选择器
    handleChange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    //必须选择三级分类才可以跳转
    beforeLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请选择商品分类");
        return false;
      }
    },
    //根据跳转的name值 来发送对应的参数
    async tabClick() {
      console.log(this.activeIndex);
      if (this.activeIndex === "1") {
        const res = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        // console.log(res.data.data);
        res.data.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTableData = res.data.data;
      } else if (this.activeIndex === "2") {
        const res = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        console.log(res.data.data);
        this.onlyTableData = res.data.data;
      }
    },
    //删除图片
    handleRemove(file, fileList) {
      // console.log(file, fileList);
      //找到相对应的路径 删除
      const filePath = file.response.data.tmp_path;

      const i = this.addForm.pics.findIndex((x) => x.pic === filePath);

      this.addForm.pics.splice(i, 1);
    },
    handlePreview(file) {
      this.previewPath = file.response.data.url;
      console.log(file);
      this.dialogVisible = true;
    },

    //successList 监听图片上传成功事件  将路径存入数组
    successList(response) {
      // console.log(response.data.tmp_path);
      const picInfo = { pic: response.data.tmp_path };

      this.addForm.pics.push(picInfo);
      // this.pics=response.data.tmp_path
    },
    //添加商品
    add() {
      //预验证
      this.$refs.addFormref.validate(async (valid) => {
        if (!valid) {
          return this.$message.error("请填写必要的信息");
        }
        //深拷贝
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = form.goods_cat.join(",");
        // console.log( this.addForm.goods_cat);

        //处理动态 静态属性
        this.manyTableData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          };
          this.addForm.attrs.push(newInfo);
        });
        //循环静态属性
        this.onlyTableData.forEach((item) => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals };
          this.addForm.attrs.push(newInfo);
        });
        form.attrs = this.addForm.attrs;
        // console.log(this.addForm);
        console.log(form);

        //发起添加请求

        const res = await this.$http.post("goods", form);

        if (res.data.meta.status !== 201) {
          return this.$message.error("添加商品失败");
        }

        this.$message.success("添加商品成功");

        this.$router.push("/goods");
      });
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>

<style scoped>
.box-card {
  margin-top: 15px;
}
.el-steps {
  margin: 15px 0;
}
.el-step__title {
  font-size: 8px;
}
.el-checkbox {
  margin: 0 5px 0 0 !important;
}

.aaa {
  width: 100%;
}

.bbb {
  margin-top: 15px;
}
</style>
